diff --git a/Readme.md b/Readme.md
index b566a1bd..b8ef5fb0 100644
--- a/Readme.md
+++ b/Readme.md
@@ -246,6 +246,7 @@ Version Information
 ===================
 Version 2.9.0.2.
   1.  Added the capability to delete a section.
+  2.  Tidy up column padding after testing with Shoehorn.
 
 Version 2.9.0.1.
   1.  First 'release candidate' version for Moodle 2.9.
diff --git a/renderer.php b/renderer.php
index f2a3eb1f..bd611a18 100644
--- a/renderer.php
+++ b/renderer.php
@@ -40,7 +40,7 @@
 class format_topcoll_renderer extends format_section_renderer_base {
 
     private $tccolumnwidth = 100; // Default width in percent of the column(s).
-    private $tccolumnpadding = 0; // Default padding in pixels of the column(s).
+    private $tccolumnpadding = 20; // Default padding in pixels of the column(s).
     private $mobiletheme = false; // As not using a mobile theme we can react to the number of columns setting.
     private $tablettheme = false; // As not using a tablet theme we can react to the number of columns setting.
     private $courseformat = null; // Our course format object as defined in lib.php;
@@ -91,12 +91,12 @@ protected function start_toggle_section_list() {
         if ($this->tcsettings['layoutcolumnorientation'] == 1) {
             $style .= 'width:' . $this->tccolumnwidth . '%;';  // Vertical columns.
         } else {
-            $style .= 'width:100%;';  // Horizontal columns.
+            $style .= 'width: 100%;';  // Horizontal columns.
         }
         if ($this->mobiletheme === false) {
             $classes .= ' ctlayout';
         }
-        $style .= ' padding:' . $this->tccolumnpadding . 'px;';
+        $style .= ' padding: ' . $this->tccolumnpadding . 'px;';
         $attributes = array('class' => $classes);
         $attributes['style'] = $style;
         return html_writer::start_tag('ul', $attributes);
@@ -275,7 +275,7 @@ protected function section_summary($section, $course, $mods) {
             'aria-label' => $title
         );
         if ($this->tcsettings['layoutcolumnorientation'] == 2) { // Horizontal column layout.
-            $liattributes['style'] = 'width:' . $this->tccolumnwidth . '%;';
+            $liattributes['style'] = 'width: ' . $this->tccolumnwidth . '%;';
         }
         $o .= html_writer::start_tag('li', $liattributes);
 
@@ -339,7 +339,7 @@ protected function section_header($section, $course, $onsectionpage, $sectionret
             'aria-label' => $this->courseformat->get_topcoll_section_name($course, $section, false)
         );
         if ($this->tcsettings['layoutcolumnorientation'] == 2) { // Horizontal column layout.
-            $liattributes['style'] = 'width:' . $this->tccolumnwidth . '%;';
+            $liattributes['style'] = 'width: ' . $this->tccolumnwidth . '%;';
         }
         $o .= html_writer::start_tag('li', $liattributes);
 
@@ -475,7 +475,7 @@ protected function section_hidden($section, $courseorid = null) {
             'aria-label' => $this->courseformat->get_topcoll_section_name($course, $section, false)
         );
         if ($this->tcsettings['layoutcolumnorientation'] == 2) { // Horizontal column layout.
-            $liattributes['style'] = 'width:' . $this->tccolumnwidth . '%;';
+            $liattributes['style'] = 'width: ' . $this->tccolumnwidth . '%;';
         }
 
         $o .= html_writer::start_tag('li', $liattributes);
@@ -621,11 +621,11 @@ public function print_multiple_section_page($course, $sections, $mods, $modnames
 
                 $this->tccolumnwidth = 100 / $this->tcsettings['layoutcolumns'];
                 if ($this->tcsettings['layoutcolumnorientation'] == 2) { // Horizontal column layout.
-                    $this->tccolumnwidth -= 1;
+                    $this->tccolumnwidth -= 0.5;
                 } else {
                     $this->tccolumnwidth -= 0.2;
                 }
-                $this->tccolumnpadding = 0; // In 'px'.
+                $this->tccolumnpadding = 20; // In 'px'.
             } else if ($this->tcsettings['layoutcolumns'] < 1) {
                 // Distributed default in plugin settings (and reset in database) or database has been changed incorrectly.
                 $this->tcsettings['layoutcolumns'] = 1;